package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.result.PageResult;
import com.sky.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Slf4j
@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 需要进行MD5加密,然后在进行比对
        password = DigestUtils.md5DigestAsHex(password.getBytes());

        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    @Override
    public void addEmp(EmployeeDTO dto) {
        Employee employee = new Employee();
        //属性拷贝
        BeanUtils.copyProperties(dto,employee);

        //1,补充缺失的属性值
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        employee.setStatus(StatusConstant.ENABLE);
        employee.setCreateTime(LocalDateTime.now());
        employee.setUpdateTime(LocalDateTime.now());

        // 获取token 解析token获取当前登录用户的id
        // ThreadLocal 获取登录人的ID
        employee.setCreateUser(BaseContext.getCurrentId());
        employee.setUpdateUser(BaseContext.getCurrentId());


        // 2,调用mapper的新增方法,将员工对象存入employee表中
        employeeMapper.insert(employee);
    }

    /**
     * 员工分页查询--需要用到分页插件
     * @param dto
     * @return
     */
    @Override
    public PageResult page(EmployeePageQueryDTO dto) {
        //1 设置分页参数

        PageHelper.startPage(dto.getPage(),dto.getPageSize());
        //2,调用mapper的分页查询方法 并强转返回类型page
           Page<Employee> page = employeeMapper.list(dto.getName());
        //3, 封装PageResult对象 返回
        return new PageResult(page.getTotal(),page.getResult());
    }

    /**
     * 启用禁用员工
     * @param status
     * @param id
     */
    @Override
    public void enableOrDisable(Integer status, Long id) {
        Employee employee = Employee.builder()
                .id(id)
                .status(status)
                .updateTime(LocalDateTime.now())
                .updateUser(BaseContext.getCurrentId())
                .build();
        employeeMapper.update(employee);
    }

    @Override
    public Employee getById(Long id) {
        // 会密码进行脱敏
        Employee employee = employeeMapper.getById(id);
        employee.setPassword("******");
        return employee;
    }

    @Override
    public void update(EmployeeDTO dto) {
        Employee employee = new Employee();
        //属性拷贝
        BeanUtils.copyProperties(dto,employee);
        // 补充缺失的属性值
        employee.setUpdateTime(LocalDateTime.now());
        employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);
    }

}
